Ninety years is a big deal, and NBC has lined up an impressive roster of talent to help America's sweetheart, Betty White, celebrate her very special milestone. Among the famous faces who will be in attendance at the historic Biltmore Hotel in downtown Los Angeles for the taping: Mary Tyler Moore, Carol Burnett, William Shatner and Hugh Jackman, plus current members of the NBC family including Jay Leno, Amy Poehler and Joel McHale.

Betty's former co-stars from The Mary Tyler Moore Show will also be on hand, with Ed Asner, Valerie Harper and Gavin MacLeod all RSVPing yes. (One glaring omission: MTMShow alum Cloris Leachman.) Also look for a special tribute from Betty's current TV Land family, Hot in Cleveland ladies Valerie Bertinelli, Wendie Malick and Jane Leeves.

Betty White's 90th Birthday: A Tribute to America's Golden Girl will air Monday, January 16 (8/9c) on NBC, followed by a sneak preview of Betty's all-new hidden-camera reality series Betty White's Off Their Rockers. The special will include musical performances and surprise appearances, with White taking the stage to share some memories and give thanks to those who've come to honor her.